What is the missing number?MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 25
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
Georg August SchweinfurthDied 19 Sep 1925 at age 88 (born 29 Dec 1836). German botanist who travelled in the interior of East Africa (from 1868) and studied the inhabitants together with the flora and fauna of the region. During this journey, in Mar 1870, he discovered the River Welle (Uele), explored the upper Nile basin, and charted the western feeders of the White Nile. He wrote about the cannibalistic practices of the Mangbettu, and his discovery of the pygmy Akka confirmed the existence of dwarf races in tropical Africa (The Heart of Africa, 1873). During 1875-88, he lived in Cairo, where he founded the Royal Geographical Society of Egypt. He made historical, geological, ethnographical and botanical investigations ranging from there to the Arabian desert.«